| 1 | Waggner, Fred | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 2 | Waggner, Robert | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2006 |
| 3 | Waggoner, W. T., Estate | Vernon, TX 76385 | Oil & Gas Operator | Feb 2018 |
| 4 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 5 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 6 | Warnock Operating Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2013 |
| 7 | WBH Energy Partners LLC | Austin, TX 78703 | Oil & Gas Operator | Oct 2025 |
| 8 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 9 | Wendy Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 10 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 11 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 12 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | Oct 2025 |
| 13 | WFW Production Company, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 14 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jan 2025 |
| 15 | William Fleming Productions, LLC | Wichita Falls, TX 76305 | Oil Operator | Feb 2025 |
| 16 | Williams, A. Oil | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 17 | Willowbend Investments, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 18 | Wills Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 19 | Wills Oil Holdings, L.L.C. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 20 | Winco Petroleum Company | Richardson, TX 75080 | Oil & Gas Operator | Jan 2003 |
| 21 | Winfield Operating Company | Dallas, TX 75214 | Oil & Gas Operator | Oct 2025 |
| 22 | Winfrey Oil Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2016 |
| 23 | Wise Production Company | Bowie, TX 76230 | Oil & Gas Operator | Oct 2025 |
| 24 | Wise Supply Company | Bowie, TX 76230 | Oil & Gas Operator | Oct 2025 |
| 25 | Wise Well Service | Bowie, TX 76230 | Oil & Gas Operator | Jul 2017 |
| 26 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 27 | Wolf, Gene | Windthorst, TX 76389 | Oil & Gas Operator | Apr 2003 |
| 28 | Wolf, Gene L.L.C. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 2025 |
| 29 | Wolfson, I. J. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2002 |
| 30 | Wolsey Well Service, Inc. | Windthorst, TX 76389 | Oil & Gas Operator | Jul 2006 |
| 31 | Wolsey Well Service, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2014 |
| 32 | Woodbine Petroleum, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 33 | Woods Operating Co., Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2020 |
| 34 | World Producers, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1994 |